716778558972 has 288 divisors, whose sum is σ = 2165594855424. Its totient is φ = 203065574400.

The previous prime is 716778558961. The next prime is 716778558983. The reversal of 716778558972 is 279855877617.

It is a happy number.

716778558972 is a `hidden beast` number, since 7 + 1 + 67 + 7 + 8 + 558 + 9 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (716778558961) and next prime (716778558983).

It is a self number, because there is not a number n which added to its sum of digits gives 716778558972.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 444375238 + ... + 444376850.

Almost surely, 2^716778558972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 716778558972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1082797427712).

716778558972 is an abundant number, since it is smaller than the sum of its proper divisors (1448816296452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

716778558972 is a wasteful number, since it uses less digits than its factorization.

716778558972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2137 counting only the distinct ones).

The product of its digits is 414892800, while the sum is 72.

The spelling of 716778558972 in words is "seven hundred sixteen billion, seven hundred seventy-eight million, five hundred fifty-eight thousand, nine hundred seventy-two".